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A non-excavation lining repair method for the repair of drainage branch pipes under urban roads

A drainage branch pipe and repair method technology, which is applied in the direction of pipe components, pipes/pipe joints/fittings, mechanical equipment, etc., can solve problems such as long construction time, large floor area, and large impact on road traffic, and achieve simplified construction procedures and The effect of time, occupied road area is small, road traffic impact is small

Inactive Publication Date: 2011-12-21
管丽环境技术(上海)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] As a result, it is very inconvenient to repair the branch pipes in the rainwater pipeline without excavation. The construction time is long and the cost is high when the repair is carried out by opening and digging. Traffic jams have a great impact on road traffic; it often leads to groundwater leakage and road sinking

Method used

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  • A non-excavation lining repair method for the repair of drainage branch pipes under urban roads
  • A non-excavation lining repair method for the repair of drainage branch pipes under urban roads

Examples

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Embodiment

[0050] A non-excavation lining repair method for the repair of the branch drainage pipes of urban roads. Firstly, the branch drainage pipes to be repaired are cleaned through inspection wells, and the interior of the pipes is detected by a closed-circuit television system.

[0051] A resin hose was produced, which was a fabric-based resin hose to which a polyester film was firmly attached on the outside and filled or impregnated with an uncured thermosetting resin on the inside.

[0052] After the resin hose is cut to the same length as the drainage branch pipe of the urban road to be repaired, it is turned inside and outside on the ground to form such a fabric-based resin hose: its inner side is firmly attached with hardened resin, and its outer side is filled with or Impregnated with unhardened thermosetting resin, dragged into the lower drainage branch pipe to be repaired.

[0053] Send a pressure bag into the above resin hose, pressurize with water or air to make the above...

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Abstract

A non-excavation lining repair method for the repair of lower drainage branch pipes of urban roads, comprising: (1) cleaning and testing the lower drainage branch pipes; - 0.5mm polyester film, the inside of which is made of polyester non-woven fabric and filled or impregnated with unhardened thermosetting resin; (3) After cutting the resin hose to the same length as the drainage branch pipe, Flip inside and outside on the ground and drag it into the drainage branch pipe; (4) Send a pressure bag into the resin hose, and pressurize it with water or air to make the resin hose expand and stick to the inner wall of the lower drainage branch pipe; (5) Warm water circulation heating is carried out in the pressure bag, and a hardened high-strength lining new pipe is formed on the inner wall of the drainage branch pipe to be repaired; (6) The air and water in the pressure bag are removed and taken out from the new lining pipe. According to the present invention, the pressure pack can be reused, and the drainage branch pipe can be repaired without excavation on the road surface when the size of the rainwater grate is very small and the end cutting cannot be performed.

Description

technical field [0001] The invention relates to an improved invention of the integral repair technology of the branch pipe of the underground rainwater pipeline of the municipal drainage, in particular, the invention relates to a non-excavation lining repair method for the repair of the branch pipe of the drainage branch of the urban road. Background technique [0002] The municipal drainage underground pipeline network is mainly due to the main underground drainage pipelines located under urban roads, buildings, etc., the underground branch pipelines, the rainwater grates on the sidewalk side (the sewer inspection well on the side of the road near the sidewalk) and the rainwater grates (sewer inspection wells) on the side of the sidewalk. connected. [0003] With the large-scale and rapid development of urbanization, the original municipal drainage underground pipeline network is far from keeping up with the needs of urban development. Mainly due to the old and aging of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/179
Inventor 孙跃平
Owner 管丽环境技术(上海)有限公司
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